摘要：为了准确地利用新兴的纳米颗粒跟踪分析法对纳米、亚微米级颗粒粒径进行测量,通过实验分别调节样品浓度、快门值、增益值、阈值等影响因素,观察测量值的变化并与标称值进行对比,探讨各因素对测量结果的影响并进行系统的理论分析。结果表明:各因素对测量结果的影响较大且呈现一定的规律性;使用纳米颗粒跟踪分析法时,需要充分考虑各影响因素,配制合适浓度的样品,合理设置各参数,以实现对颗粒粒径的准确测量。

关键词：纳米颗粒跟踪分析法；粒径；影响因素

Abstract： To measure the size of nano-particles and sub-micron particles accurately by the new method of nano-particle tracking analysis， the sample concentration， shutter value， gain value， threshold value and so on were respectively adjusted in the experiment. The variation of experiment values were observed and were compared with nominal values. The influence of the factors on measurement was investigated and analyzed systematically. The results show that the influence of the factors on measurement is relatively large and has a certain regularity. In the use of nano-particle tracking analysis method， each factor should be considered adequately. The samples with fit concentration should be configured and parameters should be set reasonably so that the particle size can be measured accurately. 

Keywords: nano-particle tracking analysis method； particle size； influence factor